Athletics: Dwain's setback.
After achieving the Beijing qualifying time in Germany on Saturday, the reformed drugs cheat is set to launch his High Court challenge to the British Olympic Association's lifetime ban on his Games participation, triggered by his positive test for the designer steroid THG in 2003.
But a host of the country's most successful Olympians - including Dame Kelly Holmes and Sir Steve Redgrave - have joined forces with the BOA to back a petition against Chambers' inclusion in the party bound for China.
The petition, initiated by the British Athletes' Commission, says: "The core foundation of the Olympic Movement is its values of fair play, respect and friendship. As Olympians we are the custodians of those ideals and any athlete who has taken performance enhancing drugs has not respected their worth.
"The highest accolade for any athlete is to be an Olympian and we believe allowing drug cheats the privilege of competing at the Olympic Games for Team GB is w rong."